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Wu Z, Harutyunyan SR, Minnaard AJ. Total synthesis of (R,R,R)-γ-tocopherol through Cu-catalyzed asymmetric 1,2-addition. Chemistry 2014; 20:14250-5. [PMID: 25205372 DOI: 10.1002/chem.201404458] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Indexed: 11/09/2022]
Abstract
Based on the asymmetric copper-catalyzed 1,2-addition of Grignard reagents to ketones, (R,R,R)-γ-tocopherol has been synthesized in 36 % yield over 12 steps (longest linear sequence). The chiral center in the chroman ring was constructed with 73 % ee by the 1,2-addition of a phytol-derived Grignard reagent to an α-bromo enone prepared from 2,3-dimethylquinone.
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Affiliation(s)
- Zhongtao Wu
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747 AG, Groningen (The Netherlands)
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Slavik P, Dudic M, Flidrova K, Sykora J, Cisarova I, Böhm S, Lhotak P. Unprecedented Meta-Substitution of Calixarenes: Direct Way to Inherently Chiral Derivatives. Org Lett 2012; 14:3628-31. [DOI: 10.1021/ol301420t] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Petr Slavik
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Miroslav Dudic
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Karolina Flidrova
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Jan Sykora
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Ivana Cisarova
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Stanislav Böhm
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Pavel Lhotak
- Department of Organic Chemistry, Prague Institute of Chemical Technology, Technicka 6, 166 28 Prague 6, Czech Republic, Institute of Organic Chemistry and Biochemistry, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic, Institute of Chemical Process Fundamentals, v.v.i. Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
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